一拿到“多项式……能分解成两个一次因式的积,求…”类型的题目,比如2 x*2-5xy-3y*2+3x+5y+k,求k的值.能告诉一看到这中题目 应该怎么想?
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![一拿到“多项式……能分解成两个一次因式的积,求…”类型的题目,比如2 x*2-5xy-3y*2+3x+5y+k,求k的值.能告诉一看到这中题目 应该怎么想?](/uploads/image/z/3996400-40-0.jpg?t=%E4%B8%80%E6%8B%BF%E5%88%B0%E2%80%9C%E5%A4%9A%E9%A1%B9%E5%BC%8F%E2%80%A6%E2%80%A6%E8%83%BD%E5%88%86%E8%A7%A3%E6%88%90%E4%B8%A4%E4%B8%AA%E4%B8%80%E6%AC%A1%E5%9B%A0%E5%BC%8F%E7%9A%84%E7%A7%AF%2C%E6%B1%82%E2%80%A6%E2%80%9D%E7%B1%BB%E5%9E%8B%E7%9A%84%E9%A2%98%E7%9B%AE%2C%E6%AF%94%E5%A6%822+x%2A2-5xy-3y%2A2%2B3x%2B5y%2Bk%2C%E6%B1%82k%E7%9A%84%E5%80%BC.%E8%83%BD%E5%91%8A%E8%AF%89%E4%B8%80%E7%9C%8B%E5%88%B0%E8%BF%99%E4%B8%AD%E9%A2%98%E7%9B%AE+%E5%BA%94%E8%AF%A5%E6%80%8E%E4%B9%88%E6%83%B3%3F)
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